切片机刀头支架变形分析

文章通过对切片机刀头支架在运行过程中变形的分析,在原有结构基础上设计加装了防变形的固定约束装置,同时对控制程序进行优化,减少了刀头支架的受力,避免了支架变形问题的发生,消除了设备隐患、提高了加工质量和生产效率,对于其它型号的切片机同样具有一定的借鉴意义。     

金刚石锯片性能与其刀头配方参数的量化关系探讨

通过定量分析，得出了锯片的效率和寿命与刀头配方有关参数的量化关系。定量研究结论与有关定性结果完全吻合，这说明该研究所得锯片性能与其刀头配方参数间的定量关系是可行的；得出的锯片性能与参数间的定量关系，可以用于指导刀头配方的参数设计；并可根据刀头的设计参数预知锯片的性能情况。要弄清楚刀头配方中所有参数与其性能间的内在定量关系，仍需作更进一步的深入研究。     

一种去毛刺刀具

一种去毛刺刀具,包括刀体和刀头。刀头安装在刀体上,刀头具有一切削面,在刀头切削面上与刀体相对的一边具有一刀口钝边,刀头切削面上横向贯穿开设一与刀口钝边平行且邻接的弧状排屑槽。刀头切削面的刀口钝边的宽度为0．5～3mm。刀头切削面的圆弧状排屑槽的弧度半径为1～15mm。     

热压法生产石材加工用圆锯金刚石刀头

概述了热压法生产石材加工用圆锯金刚石刀头的原料选择、混合料制备、模具结构及材料、热压工艺过程；对产品缺陷的产生原因进行了初步分析；并指出热压法工艺是目前应用最多，发展最快的方法。     

人造金刚石刀头研究开发中的技术问题

从人造金刚石刀头构成的3个方面:结合剂、金刚石、内外部结构出发,讨论总结了各种因素对刀头性能的影响。根据理论研究和实践经验提出了一些指标的控制参数和判断依据。     

基于无标样分析软件的X射线荧光光谱法测定金刚石刀头成分

金刚石刀头的成分分析,对于改进生产配方,提高金刚石刀头的切割效率和切割寿命具有重要意义.对于不同的切割对象,需要不同性能的金刚石刀头,从而导致金刚石刀头成分复杂多变,再加上缺乏标样等因素,研究报道相对较少.实验利用X射线荧光光谱法(XRF)的无标样半定量软件对金刚石刀头中的骨架元素Fe、Cu、Zn、Sn进行检测,解决了...     

石材切割锯片金刚石刀头磨损状况的研究

研究了花岗石锯切过程中金刚石锯片刀头的磨损状况,对刀头结合剂和金刚石磨粒的磨损机理进行了分析,并探讨了金刚石磨粒的磨损形态对金刚石锯片锯切性能的影响。     

连铸坯去毛刺机刀头尺寸的优化

分析了连铸坯毛刺残留严重的原因,通过去毛刺机刀头的改进,消除了毛刺残留现象,提高了热轧钢板的质量,同时还延长了刀头的使用寿命。     

纯钛吸氢后的微观结构研究

小块钛板在３６０℃和０．１～０．２ＭＰａ纯氢中进行氢化，然后冷却至室温。氢－钛原子比（ｘ＝Ｈ／Ｔｉ）在０．１至２．０间变动，用ＸＲＤ、ＴＥＭ及金相观察研究了微观结构。当０．１＜ｘ＜１．９时，观察到亚稳相Ｙ，属体心四方结构，其晶格参数ａ＝０．３１２ｎｍ、ｃ＝０．４１８ｎｍ。当ｘ值较小时，形成Ｙ与ａ（ｈｃｐ）的混合相；当ｘ值较高时，形成Ｙ与δ的混合相；在ｘ＝０．７时形成亚稳共析体微观结构。     

钻探工程中冲击载荷下冲击功和破碎比功理论模型研究

冲击荷载作用下破碎岩石是钻探工程中常用的碎岩方法之一。为了减少坚硬脆性岩层中的钻头磨损和提高冲击碎岩效率,本文针对动载碎岩原理和冲击碎岩效果,开展了其理论模型公式研究和分析。探讨了动静载碎岩效果的区别,详细分析了影响冲击碎岩效果的因素中的冲击功和破碎比功,基于岩石破碎比功建立了破碎体积的解析计算模型,这一研究的开展对于冲击钻进技术应用质量的提升,起到了有效的促进作用。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.